

Best for beginner divers, 1-40m, boat entry, moderate current.
Big Drop-Off is a vertical wall dive located along the Ngemelis Islands. The reef shelf begins at 1 metre and descends sharply to 40 metres, with an average depth of 20 metres. Divers experience moderate currents along the wall, making it suitable for beginners who stay close to the reef structure. Visibility ranges from 15 to 45 metres. Water temperatures remain between 28 and 30 degrees Celsius, though cold thermoclines may occur in January and February. Access is by boat only. Divers must remain vigilant for boat traffic when surfacing and exercise caution regarding hand placement on the reef due to the presence of lionfish and stonefish.
7.10143, 134.24965
Watch where you place your hands on the reef, as stonefish and lionfish are present among the rock and coral, and a moment's inattention on the shallow sections near the lip can cause a serious sting. Boat traffic around the Ngemelis area can be busy, so always surface with a marker buoy and listen for engines before ascending.
Access is via boat from Koror, typically taking 20 to 30 minutes.
Recorded at this site
Depth
Up to 40m
Visibility
15-45m
Skill Level
Beginner
Entry
Boat
Boat required
Water Temp
28-30°C
Current
Moderate
Yes, the site is suitable for beginners, though divers should be prepared for moderate currents along the wall.
The reef shelf drops from 1 metre down to 40 metres, with an average depth of 20 metres.
This is a boat-only dive site; boat traffic can be busy in the Ngemelis area, so always use a marker buoy when surfacing.
Hazards include significant depths along the wall, boat traffic, and the presence of camouflaged lionfish and stonefish on the reef structure.
While the site is primarily a dive location, the shallow sections near the reef lip are accessible, though divers should be aware of the drop-off.
Diving at Big Drop-Off in Koror requires the following certifications: Open Water. Always dive within your training limits.
A rashguard or 2mm shorty is recommended for diving at Big Drop-Off in Koror. Water temperatures range from 28°C to 30°C.
Expect moderate currents at Big Drop-Off in Koror. Good buoyancy control and some drift diving experience is helpful.
Visibility at Big Drop-Off in Koror typically ranges from 15 metres to 45 metres. Conditions vary with weather, tides, and seasons.